Bay meter problem

[Jimmy Buffett]

I posted this in Jim Coleman but think it might get more looks here.
I have a bay meter that won't change functions. I have replaced the keypad and the circuit board (and the coin acceptor and timer for that matter). The buttons make a beeping sound, all but foam brush, but the light stays on "wax". I have basically replaced everything in the box. Sometimes it will work ok for a few days but it always does it again. Any ideas?
Thanks!

 

[Buzzie8]

Call wayne at B&C electronics. He should be able to help you out.

 

[Jimmy Buffett]

That is an outstanding idea! You would think a smart guy like me would have thought of that since I have bought the boards and timers there. I'll call today.